From de91c5c55bc9ba106a05edf978d54a38c2ba9486 Mon Sep 17 00:00:00 2001
From: "Joshua.Couper" <joshuac@jccustomsolutions.com>
Date: Sun, 18 Jan 2026 19:46:58 +0000
Subject: [PATCH] Update ConvertTo-mkvh265-GPU.ps1

---
 ConvertTo-mkvh265-GPU.ps1 | 160 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 160 insertions(+)

diff --git a/ConvertTo-mkvh265-GPU.ps1 b/ConvertTo-mkvh265-GPU.ps1
index e69de29..ecc78be 100644
--- a/ConvertTo-mkvh265-GPU.ps1
+++ b/ConvertTo-mkvh265-GPU.ps1
@@ -0,0 +1,160 @@
+# ================= CONFIG =================
+$SourcePath   = ""
+$LogPath      = "C:\ffmpeg_encode.log"
+
+$CQ           = 24
+$Preset       = "slow"
+$DryRun       = $false
+# =========================================
+
+$videoExts = ".mp4",".mkv",".avi",".mov",".ts",".m2ts",".wmv",".flv",".webm"
+
+if (!(Test-Path $LogPath)) {
+    New-Item -ItemType File -Path $LogPath | Out-Null
+}
+
+function Write-Log {
+    param ([string]$Message)
+    $timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
+    "$timestamp - $Message" | Tee-Object -FilePath $LogPath -Append
+}
+
+function Format-Time {
+    param ([double]$Seconds)
+    if ($Seconds -lt 0) { return "00:00:00" }
+    [TimeSpan]::FromSeconds([math]::Round($Seconds)).ToString("hh\:mm\:ss")
+}
+
+Write-Log "==== FFmpeg H.265 batch encode started ===="
+
+$files = Get-ChildItem $SourcePath -Recurse -File |
+    Where-Object { $_.Extension -in $videoExts }
+
+$total      = $files.Count
+$counter    = 0
+$totalSaved = 0
+
+# Stats
+$encoded = 0
+$remuxed = 0
+$skipped = 0
+$failed  = 0
+
+$encodeTimes = @()
+
+foreach ($file in $files) {
+    $counter++
+
+    Write-Progress -Id 1 `
+        -Activity "Overall Progress" `
+        -Status "File $counter of $total"
+
+    $input  = $file.FullName
+    $output = Join-Path $file.DirectoryName ($file.BaseName + ".mkv")
+    $tmp    = Join-Path $file.DirectoryName ($file.BaseName + ".tmp.mkv")
+
+    $codec = & ffprobe -v error -select_streams v:0 `
+        -show_entries stream=codec_name `
+        -of default=noprint_wrappers=1:nokey=1 "$input"
+
+    # Skip H.265 MKV
+    if (($codec -eq "hevc") -and ($file.Extension -eq ".mkv")) {
+        Write-Progress -Id 2 -ParentId 1 `
+            -Activity "Current File" `
+            -Status "SKIPPED (H.265 MKV): $($file.Name)" `
+            -PercentComplete 100
+        Write-Log "SKIPPED: $input"
+        $skipped++
+        continue
+    }
+
+    if ($DryRun) {
+        Write-Log "DRY-RUN: $input -> $output"
+        continue
+    }
+
+    $origSize = (Get-Item $input).Length
+
+    $duration = & ffprobe -v error -show_entries format=duration `
+        -of default=noprint_wrappers=1:nokey=1 "$input"
+    $duration = [double]$duration
+
+    $startTime = Get-Date
+
+    $args = "-y -i `"$input`" -c:v hevc_nvenc -preset $Preset -rc vbr_hq -cq $CQ -c:a copy `"$tmp`" -progress pipe:1 -nostats"
+
+    $psi = New-Object System.Diagnostics.ProcessStartInfo
+    $psi.FileName = "ffmpeg"
+    $psi.Arguments = $args
+    $psi.RedirectStandardOutput = $true
+    $psi.UseShellExecute = $false
+    $psi.CreateNoWindow = $true
+
+    $p = New-Object System.Diagnostics.Process
+    $p.StartInfo = $psi
+    $p.Start() | Out-Null
+
+    while (-not $p.HasExited) {
+        $line = $p.StandardOutput.ReadLine()
+        if ($line -match "^out_time_ms=(\d+)$") {
+            $doneSec = $matches[1] / 1000000
+            $percent = [math]::Min([math]::Round(($doneSec / $duration) * 100), 100)
+
+            $elapsed = (Get-Date) - $startTime
+            $rate = if ($doneSec -gt 0) { $elapsed.TotalSeconds / $doneSec } else { 0 }
+            $etaFile = ($duration - $doneSec) * $rate
+
+            $avgEncode = if ($encodeTimes.Count -gt 0) {
+                ($encodeTimes | Measure-Object -Average).Average
+            } else { 0 }
+
+            $etaQueue = ($total - $counter) * $avgEncode
+
+            Write-Progress -Id 2 -ParentId 1 `
+                -Activity "Current File" `
+                -Status "Encoding: $($file.Name) ($percent%) | File ETA: $(Format-Time $etaFile) | Queue ETA: $(Format-Time $etaQueue)" `
+                -PercentComplete $percent
+        }
+    }
+
+    if (Test-Path $tmp) {
+        try {
+            Remove-Item $input -Force
+            Rename-Item $tmp $output -Force
+
+            $newSize = (Get-Item $output).Length
+            $saved   = $origSize - $newSize
+            $totalSaved += $saved
+
+            $encodeTime = ((Get-Date) - $startTime).TotalSeconds
+            $encodeTimes += $encodeTime
+
+            $encoded++
+            Write-Log "ENCODED: $input | Saved $([math]::Round($saved/1MB,2)) MB"
+        }
+        catch {
+            Write-Log "FAILED TO REPLACE: $input"
+            $failed++
+        }
+    }
+    else {
+        Write-Log "FAILED: $input"
+        $failed++
+    }
+}
+
+Write-Progress -Id 2 -Completed
+Write-Progress -Id 1 -Completed
+
+$totalSavedMB = [math]::Round($totalSaved / 1MB, 2)
+
+Write-Host ""
+Write-Host "===== SUMMARY ====="
+Write-Host "Total files : $total"
+Write-Host "Encoded     : $encoded"
+Write-Host "Skipped     : $skipped"
+Write-Host "Failed      : $failed"
+Write-Host "Space saved : $totalSavedMB MB"
+Write-Host "==================="
+
+Write-Log "==== FFmpeg H.265 batch encode finished ===="